Roll adjusting means for rolling mills



Jan. 12, 1932. H. FORNELIUS ROLL ADJUSTING MEANS FOR ROLLING MILLS FiledMarch 19, 1931 m l mm r N0 F y e v m ATTORNEY-3 m h h w i il Patented1m. 12, 1932 UNITED STATES PATENT OFFICE HARVEY FOBNELI'US, O1 OLD'TON,NEW JERSEY, ASBIGNOB '10 THE ATHEN'IA STEEL COMPANY, OF ATEENIA,CLIFTON, NEW JERSEY, A CORPORATION OF NEW JERSEY ROLL ADJUSTING MEANSFOR ROLLING m Application filed March 19, 1981. Serial No. 528,860.

This invention relates to rolling mills, and has particular reference toan improved means for accomplishing the adjustment of the rolls withrespect to each other.

a Heretofore the ad'ustment of the rolls has been accomplished ypressure exerted directly upon the roll bearings by screws, and it hasbeen observed that this adjustmentlacks m the necessary accuracy andprecision, espe- 'cially where the thickness of the product is requiredto be exact within thousandths of an inch and the inaccuracies have beentraced to the give or lost motion between the screw 35 threads, whichincreases as wear occurs there- It is, therefore, the principal objectof the present invention to provide an improved roll adjusting means forrolling mills which insures precision in the adjustment of the rolls andpositively precludes any unintentional or accidental relative movementof the roller peripheries which tends to destroy their adjustment whenonce set.

More specifically, the invention resides in a roll adjustment forrolling mills, in which use is made of an eccentrically disposed rotarycam acting between a fixed bearin surface and the movable roll hearingwhich func s0 tions to positively preclude change of adjustment underworking conditions.

Other objects of the invention reside in the comparative simplicity ofconstruction of the roll adjusting means, the economy with which it maybe produced and installed in a rolling mill, the durability of the meansand the general efliciency derived therefrom.

With the above recited and other objects in view, reference is had tothe following de- 40 scription and accompanying drawings, in

which there is exhibited one example or embodiment of the invention,while the claims define the actual scope of the same.

In the drawings:

Figure 1 is a front view of a rolling mill equipped with a rolladjusting means constructed in accordance with the invention.

Figure 2 is a side view thereof.

Figure 3 is an enlarged fragmentary side 50 view of the same with partsbroken away and shown in section to disclose the underlying structure.

Referring to the drawings by characters of reference, A and B designaterespectively the lower fixed and upper adjustable rolls,

the former being driven and the latter an idler, and between theperipheries of which the material to be rolled is designed to be actedupon. As is customary in rolling mills, the idler roll B is mounted forrelative adjustment toward and away from the roller A whereby thedesired thickness of the rolled material may be obtained. As shown inthe present instance, the lower driven fixed roll A is provided withtrunnions or shaft portions C which project axially from the oppositeends thereof and which are journaled in bearings D disposed between thevertical pairs of framemembers E. The roll B is likewise provided withtrunnions or shaft portions F which project axially from the oppositeends thereof and u on which bearings G rest, the bearings being mountedfor vertical shifting movement within the pairs ofnframe members E atopposite sides of the ro s.

In lieu of exerting direct pressure upon the bearings G by screws, as isthe common practice, the present invention comprehends the use of a camroller 5 which is interposed between the bearing G and a superposedfixed element 6 which is supported by the frame members E. The camroller 5 is preferably of substantially oval shape in cross section,having a major and minor diameter and presenting gradually increasingdiameters between said major and minor diameters so that upon turning ofthe cam roller, the bearing G is adjusted and maintained in accuratelyor precise adjusted position without possibility of change of adjustmentwhen under working conditions. The movable bearin G and the fixedelement 6 are respectivly ormed with concaved recessed bearing surfaces7 and 8 0 which intimately fit the periphery of the cam roller 5 andinsure a direct thrust of the movable bearing G. It will also beobserved that the bearin points of the cam roller 5 and the axis 0rotation 9 are dis sed in alignment with each other but slight y out ofdirect alignment with the line intersecting the axes of the rolls A andB. This further insures against accidental slippage or relativeseparative movement of t e roll peripheries beyond the set adjustment.The axis 9 of the cam roller 5 carries a worm gear 10 with which a worm11 on a worm shaft 12 meshes, the worm shaft being mounted in bearings13 and being provided with a manipulating wheel or its equivalent 14, byvirtue of which turning of the cam roller and adjustment of theadjustable roll is effected.

' In view of the foregoing, it will thus be seen that an improved rolladjustment for rolling mills has been devised which insuresaccuracy andreeision and avoids the possibility of acci ental or unintentionalchange of adjustment while-the mill is in operation.

While there has been illustrated and described a referred embodiment ofthe invention, it is to be understood that no limitation is necessarilymade to the precise structuraldetails, as variations and modifications.which properly fall within the scope of the claims may be resorted toif desired.

What is claimed is:

1. In a rollin mill, fixed and adjustable rolls, a movable bearing foreffecting adj ustment of said adjustable rolls, said bearing mounted forguided movement, a fixed bearing element spaced from the movable bearingand a rotatory cam member having diametrically opposite portions ofitscam face engaging between said movable roll. bearing and the fixedbearing element.

2. In a rolling mill, a driven roll, an idler roll, a fixed bearing forthe driven roll, a vertically movable bearing for the idler roll, meansfor guiding the movable bearing, a fixed element spaced from the movablebearing and a rotatory oval cam roller having diametrically oppositepoints of its periphery respectivel engaging said fixed element and themovab e bearing for adjusting the mov able roll and for maintainingthe'same in adjusted position.

3. In a rolling mill, a driven roll, an idler roll, a fixed bearing forthe driven roll, a vertically movable bearing for the idler roll, meansfor guiding the movable bearing, a

fixed element spaced from the movable bearing and a rotatory oval camroller interposed between said fixed element and the movable bearing foradjusting the movable roll and for maintaining the same in adjustedposition, said movable bearing and fixed element having concavedrecessed bearing portions intimately fitting the periphery of the camroller.

4. In a rolling mill, a driven roll, an idler roll, a fixed bearing forthe driven roll, a vertically movable bearing for the idler roll, meansfor guiding the movable bearing, a fixed element spaced from the movablebearing and a rotatory oval cam roller interposed 8, In a rollin mill,fixed and a rolls, a movable earin for eflecting adjustrnentof saidadjustab e' roll, said bearing between said fixed element and themovable bearing for adjusting the movable roll and for maintaining thesame in adjusted position, said mova 1e bearin and fixed element havingconcaved recesse bearin portions itimately fitting the periphery o thecam roller and means for imparting turning motion to the cam roller.

5. In a rolling mill, a driven roll, an idler roll, a fixed bearing forthe driven roll, a vertically movable bearing for the idler roll, meansfor guiding the movable bearing, a fixed element spaced from the movablebearing and a rotatory oval cam roller interposed between said fixedelement and the movable bearing for adjusting the movable roll and formaintainin the same in adjusted posi-' tion, said mova le bearin andfixed element having concaved recessed bearin portions itimately fittingthe periphery o the cam roller and means for'imparting turning-motion tothe cam roller consisting of a worm and worm gear.

6. In a rolling mill, a driven roll, an idler roll, a fixed bearing forthe driven roll, a vertically movable bearing for the idler roll, meansfor guiding the movable bearing, a fixed element spaced from the movablebearing and a rotatory oval cam roller interposed between said fixedelement and the movable bearing for adjusting the movable roll and formaintaining the same in adjusted position, said movable bearin and fixedelement having concaved recesse bearing portions intimately fitting theperipher of the cam roller, the axis of the cam rol er being disposedout of direct alignment with the line of the axes of the rolls.

7. In a rollin mill, a lower driven roll, a superimposed i'ler roll, a.fixed bearing for the lower roll, a vertically movable bearing for theupper roll, means for guidin the movable bearing, a fixed elementspacefvertically with respect to said movable bearing and a rotatorysubstantially oval cam roller interposed between said fixed element andsaid movable bearing with diametrically oppbsite points of its eripheryengagin the same for adjusting the movable roll an for maintaining thesame in adjusted cposition.

justable mounted for guided movement a fixed element spaced from themovable bearing, and a rotatory cam engaging between said movable rollbearing and the fixed element, the points of engagement of the cam andits axis of rotation being disposed in alignment with each other and outof alignment. with a line intersecting the axes of the rolls whereby tomaintain the rolls in their relatively adjusted position.

HARVEY FORNELIUS.

